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Home >> Audi >> 2012 >> A7 Quattro Sportback (4GA) V6-3.0L SC (CGXB) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Collision Avoidance and Parking Assist Systems >> Testing and Inspection >> Lane Change Assistance Control Modules (J769)/(J770), Calibrating

Lane Change Assistance Control Modules (J769)/(J770), Calibrating






Lane Change Assistance Control Modules (J769)/(J770), Calibrating

Special tools, testers and auxiliary items required

• Calibration Tool For Lane Changing Assist (VAS 6350)

Conditions

- The lane change assistance control module (J769) / (J770) must be calibrated in the "Guided Fault Finding" or "Guided Functions" operating mode under the following conditions using the Vehicle Diagnostic Tester:

• The lane change assistance control module (J769) or lane change assistance control module 2 (J770) was replaced.

• The rear bumper was damaged.

• The rear bumper was removed and installed.

• The DTC "no or incorrect basic setting/adaptation" is stored in the DTC memory.

Procedure

- Move the vehicle onto a solid, flat surface.

- Set the parking brake - the vehicle must not move during the measuring.

- Place the front wheels in a straight-ahead position - steering wheel in 0 position.

- Connect the Vehicle Diagnosis Tester.

• If a malfunction message appears in the display, refer to the Vehicle Diagnostic Tester operating Instructions.

- Switch ignition on.

- Remove the label with the metal foil from the bumper cover, if necessary.

- Secure three SW 19 wheel bolt adapters for wheel bolts on each Wheel Center Sensor (VAS 6350/1).






- Insert the measuring paddle on both wheel center sensors (VAS 6350/1) and secure it with the locking nut.

- Place the (VAS 6350/1) on the wheel bolt on both rear wheels.

• Wheel center sensor rotation center must be in wheel rotation center.

• Place (VAS 6350/1) on wheels so that "anti-theft wheel bolts" are not connected with wheel center sensor.

- Adjust measuring paddle with aid of lock nuts so that they move freely just above the floor.

• The measuring paddles must move easily.

• The measuring paddles must be vertical.

- Position the Calibration Tool (VAS 6350) at distance - a - to the rear wheels.






• Dimension - a - = 1700 mm

- Turn on the spacing laser (VAS 6350/2) with the ON button.






Display on (VAS 6350/2) :

• "- - - m"

• Laser is switched on at same time.

- For distance measurement, hold the distance laser (VAS 6350/2) - 2 - flush to the left stop bracket as illustrated.






• The distance laser (VAS 6350/2) lie firmly against catch bracket.

- Make sure the "laser beam" for the distance measurement contacts the paddle on lower enlarged part - 1 -.

If this is not the case, measure paddle height must be corrected using lock nuts on (VAS 6350/1).

- Briefly press ON button for distance measurement.






Display on (VAS 6350/2) :

• "1,700 m" (specified value: 1,700 +/- 2 mm).

- Repeat the measuring procedure from the right stop bracket to the right rear wheel.

• The distance value must be the same on both sides.

If both measured values are not the same, adjust (VAS 6350) accordingly.

- Select the path "calibration" after selecting "lane change assistance".

• The version of the lane change assistance software is displayed (versions: SWA1.5 or SWA1.7).

• This information for adjusting the calibration device is important for later steps in the procedure to avoid malfunctions.

- Secure lane change assistance calibration device (VAS 6350/4) at left rear of (VAS 6350) mount.






• When installed correctly, vehicle electrical system voltage line must be connected at bottom left of calibration device (as seen in direction of travel).

Dimension - a - is measured from upper edge of calibration device to the floor.

• SWA 1.5: dimension - a - = 830 mm.

• SWA 1.7: dimension - a - = 830 mm.

- The indicator on the base of the lane change assistance calibration device (VAS 6350/4) must align with setting on measurement scale - 1 - on measuring field - arrow -.

Vehicles with SWA1.5:

• Left setting = 790 mm (read on measurement scale - 1 -).

Vehicles with SWA1.7:

• Left setting = 790 mm (read on measurement scale - 1 -).

All Vehicles

- Connect the calibration tool for lane changing assist (VAS 6350/4) to the vehicle electrical system voltage.

- Bring (VAS 6350) into horizontal position by turning plastic base.






• Observe bubble level (sight glass) on (VAS 6350) - arrow -.

- Turn on the Line laser (VAS 6350/3) on the (VAS 6350).






- Wear "laser protective eyewear".

- Align the (VAS 6350) so the (VAS 6350/3) strikes the center of the brand emblem on the rear lid.

- Check left and right distance between catch bracket on (VAS 6350) and measuring paddle - 1 - on wheel sensors again.






• Specified value: 1,700 ± 2 mm

Calibration procedure

The following should not occur during the calibration procedure:

• Vehicle doors must not be opened or closed.

• People should not sit in the vehicle.

• People should not go between the vehicle and the lane change assistance calibration device (VAS 6350/4).

Procedure






- Turn on the calibration tool for lane changing assist (VAS 6350/4) on the voltage switch - 3 -.

• The green LED - 1 - must light up.

• If the red LED - 2 - lights up: Check lane change assistance calibration device (VAS 6350/4).

- Follow the instructions in the Vehicle Diagnosis Tester display.

During the course of the program, a request is made to switch the lane change assistance calibration device (VAS 6350/4) from the left to the right side of the (VAS 6350).






- Turn off the calibration tool for lane changing assist (VAS 6350/4) and remove the calibration tool.

• When installed correctly, vehicle electrical system voltage line must be connected at bottom left of calibration device (as seen in direction of travel).

Dimension - a - is measured from upper edge of calibration device to the floor.

• SWA 1.5: dimension - a - = 830 mm.

• SWA 1.7: dimension - a - = 830 mm.

- The indicator on the base of the lane change assistance calibration device (VAS 6350/4) must align with setting on measurement scale - 1 - on measuring field - arrow -.

Vehicles with SWA1.5:

• Right setting = 790 mm (read on measurement scale - 1 -).

Vehicles with SWA1.7:

• Right setting = 790 mm (read on measurement scale - 1 -).

All Vehicles






- Turn on the calibration tool for lane changing assist (VAS 6350/4) on the voltage switch - 3 -.

• The green LED - 1 - must light up.

- Follow the instructions in the Vehicle Diagnosis Tester display.

- After calibrating the lane change assistance successfully, end "calibration", switch off the ignition and disconnect the diagnostic connector.

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